Getting ESP Service light when it's hot - again! Any clues?

[Maskell]

About 1 year ago I was driving home on a hot day and traction control and esp service light came on. I was only 2k from home and everything seemed ok so I drove home. Got home and vehicle would not start so I unpacked and thought I will have a look a bit later on. Went to car and it was fine, no problem. This was out of warranty but only around 16000k. This went on for a bit so I bought a scanner and no codes were stored. I read the commodore posts on a similar problem and they were having ABS wheel sensor problems. I did an Ohm test on the sensors and found one different to the others on the front. I rang the Holden dealer and as the sensors were $75 each I bought the 2 front ones and fitted them and the problem was gone, until now. I can get to work and go to town etc but the last two days of an afternoon when the heat gets on it I can not start it and the ESP Service light comes on. I updated my scanner but no codes. I come in the next morning and everything is fine until 4.30pm and it wont start and ESP Service light is on again. I had started it 5 times throughout the day with no problems. It has been left there again this arvo as it wont start. I ohms tested the afront ABS sensors and they are 16.17Milli ohms if I am reading the pissy little meter right on the right and 16.99 on the left. I will go in tomorrow and it will start no problems and show no codes. It was bought in May 2013 but still only has 22, 000k as yet but it is starting to give me the *****.
Any clues to the problem? It only does it on the really hot days it seems.
I will test the sensors when cold tomorrow and look for a change. I thought I fixed it last time by replacing both sensors.
Any one else have similar problems?

[Maskell]

Went in this morning and started the ute up and drove home with no problems, that is the third night it slept in the car park and third time the next day no problems. Starts and drives well with no warnings. Saturday today so it will go up on my hoist for ohm tests on wheel sensors once more while cold and hook the foxwell ABC and Air bag scan tool on and see what it tells me.
I went into the fowxwell site and downloaded all of the data updates so we have the latest info available and there were some for the colorado and Colorado7 so we will see.

[Maskell]

Looks like we are on top of it after a few months ****ing about.
Here is the bill and the fix.
1 R NO START CONCERN
CUSTOMER CONCERN OF VEHICLE INTERMITTENTLY NOT STARTING. CHECKED CUSTOMER CONCERN AND FOUND VEHICLE WAS UNABLE
TO BE STARTED. CHECKED FOR TROUBLE CODES AND FOUND U0073 BODY CONTROL MODULE CAN BUS NO COMMUNICATION, U0100
(00) LOST COMMUNICATION WITH ENGINE CONTROL MODULE, U0102 (00) LOST COMMUNICATION WITH TRANSMISSION CONTROL
MODULE, U0121 (00) LOST COMMUNICATION WITH ELECTRONIC BRAKE CONTROL MODULE. CARRIED OUT A HIGH SPEED CAN BUS
TEST USING THE GDS CAN BUS TOOL. FOUND THE HIGH SPEED CAN BUS IS OPEN CIRCUIT. FOUND A HIGH SPEED CAN BUS
SCHEMATIC DOCUMENT ID : 3287556. DISCONNECTED THE X204 CONNECTOR AND TESTED THE HIGH SPEED CAN BUS AT THE MALE
TERMINALS C4 AND C5. FOUND A 120 OHMS RESISTANCE. TESTED X204 CONNECTOR TERMINALS C4 AND C5 FEMALE TERMINALS
AND FOUND OPEN CIRCUIT AT THE CAN BUS. DISCONNECTED THE X6 CONNECTOR AT THE BCM AND CHECKED HI SPEED CAN BUS
AT TERMINALS 24 AND 25. FOUND 120 OHMS RESISTANCE BETWEEN THE TWO CIRCUITS. CHECKED TERMINALS IN CONNECTOR X6
TERMINALS 24 AND 25 AND FOUND THE FEMALE TERMINALS TO HAVE POOR TENSION. BACKED THE TERMINALS 24 AND 25 X6 OUT
OF THE CONNECTOR AND RETENSIONED THE CONNECTOR TERMINALS 24 AND 25. REFITTED THE TERMINALS TO CONNECTOR X6 AND
REASSEMBLED ALL REMOVED HIGH SPEED CAN BUS CONNECTORS. RETESTED THE CAN BUS A TERMINALS 6 AND 14 AT THE DLC
CONNECTOR AND NOW FOUND THE RESISTANCE TO BE IN SPECS. CLEARED ALL TROUBLE CODES AND TEST DROVE VEHICLE. FOUND
THE FAULT TO BE AN OPEN CIRCUIT ON THE HIGH SPEED CAN BUS DUE TO POOR TERMINALS TENSION AT THE TERMINALS 24
AND 25 CONNECTIONS. TAW.
Labour Operation Amount
NO START CONCERN 227.28
Total Item 1 227.28
Total Costs
Total Invoice (excluding GST) 227.28
Total Goods & Services Tax 22.73
Total Round-Off -0.01
Total Invoice (including GST) 250.00

[Maskell]

Even though there were a couple of trips to the dealer, the end result was cheap enough; but boy, was it annoying?!

[Peter Aawen]

So it was basically just loose terminals??

[Maskell]

Went to start Colorado to go home yesterday afternoon and it would not start again at first but I did get it running after a few attempts.
Once it was running I had the following
1.Service ESP on dash
2.A/C Fan going but A/C compressor not engaged, it just blew hot air
3.Park brake light on
4.Traction control light on
5. ABS light on
6.No Speedo
7.No tacho (Dash not working at all)

I drove the car home but it would not start once at home and the code reader would not power up to read codes.

This morning I started it and drove to work with no problems at all.

This morning the diagnostic tool would connect and we got the following codes.
1. C0161-00
2. U0073-00
3. U0100-00
4. U0101-00
5. C0161-72
First time they can look at it is this Friday so see what they find this time.

[Peter Aawen]

This has gotta be something that varies with use &/or the heat. Are you sure you don't have a loose or broken earth strap or terminal? I'd guess somewhere between the battery & the body most likely; altho body to block, or block to battery might also do the same sort of thing..... maybe even the dash to body earth??

[mydmax]

Maskell
That makes the $250 or so they charged you for the FIX completely void. Get your money back.

They may be able to religously document everything they touch but it seems, despite using electronic diagnostic gear in place of a diagnostic brain (which they probably don't have) you have been had.
I agree with Peter, there seems to be a heat related item which gives up at times but resumes duty sometimes when colder.

Remove all the plugs from the ECU and check the each pin with a strong magnifying lens. Other control modules may require similar treatment.

I know of a D40 Navara which wouldn't start, and after Official Nissan fiddling, it ran and claimed it had no faults. They didn't find anything concrete/definite.

Despite being very new, immediately after the vehicle started the owner wanted to trade in for something different. The dealer wouldn't trade the vehicle stating it had a problem, despite saying 5 mins before it was fault free.

You may have to systematically find the fault yourself or with someone else seeing the official dealer cannot.
Still, you are due for a refund.

[bdt 51]

Had the same problem with my 2017 RG. Service ESC as well as ABS, handbrake light. Speedo and Tacho down to zero and back up again, finally limp mode. Drove 70k to the nearest dealer that was Bundaberg. Technician read all the faults then reset the computer and could not get the ute to play up again. Intermittent fault and they don't know the cause. Contacted Holden Customer care and they gave me a case number to quote when (if) it happens again. Heading to the Cape the end of June pretty sure it won't be in this dodgy Colorado. Case number won't help much up there. ute has 25000k on it.

[Asexton]

I’m currently having the same issue with my 2015RG. Dealership has no idea on what’s wrong and have said holden has never heard of this happening before...clearly wrong. Anybody had any luck actually fixing the problem? In another forum somebody swapped out their alternator and apparently fixed it. Has anyone else tried that?